I think it means that you can mutate the field via the
struct-type-info, assuming you can get hold of said info. See:
http://docs.plt-scheme.org/reference/inspectors.html
N.
On Mon, Oct 20, 2008 at 7:27 AM, Raoul Duke <raould at gmail.com> wrote:
...
> but, apparently there's no mutating set procedure created unless i
> also mark it as #:mutable, so i don't grok what it means for them to
> be implicitly mutable, if i can't mutate them.
>> thanks.